OMA would like to inform all the organisations subscribed to the IETF new-work list of the approval of 1 new work item:
1 Location in SIP/IP Core WI:
Background
:
OMA has developed various enablers related to location. The MLS enabler has the
main purpose to define protocols for exposure of terminal location to
applications but do not define any positioning determination mechanisms. SUPL on
the other hand defines procedures and protocols for positioning determination of
a terminal utilizing an IP connection between server and terminal. Both enablers
are to some extent prepared for use in a SIP context e.g. by allowing use of
SIP-URI identities. None of them do however support exposure of terminal
location to an application within a SIP/IP core network (one example of such a
network is an IP Multimedia Subsystem). The implication of this is that a SIP Application Server needing location
information to enhance its services needs to implement one or more non-SIP
interfaces to Location Servers. By instead defining an interface & procedure
using SIP, additional interface technologies can be avoided and routing and
addressing mechanisms in the SIP/IP Core as well as existing SIP based OMA
enablers (such as XDM) can be reused.
Objective:
The purpose of this work item is to specify a service enabler for exposing
location information to applications in a SIP/IP core network (e.g an IP
Multimedia Subsystem). The service enabler is to be specified as a reusable
network component in a SIP/IP core network, capable of receiving and responding
to location subscriptions over a standardised SIP-based interface. Handling of
the location specific functions within a SIP/IP core is to be specified but positioning
determination functions within SIP/IP core are out of scope. The LOCSIP enabler will take into account the OMA MLS
enabler.
The enabler shall specifically consider interworking with other OMA
enablers that potentially utilize location information e.g. Presence SIMPLE and
PoC. The resulting specification shall preferably reuse available IETF
specifications e.g. IETF Geopriv deliverables.
Location in SIP/IP core enabler implementations may interwork with
applicable positioning determination functions in access networks and/or at UE.
Possible positioning determination functions depend on support in IP-CAN and
UEs, but are expected to at least include 3GPP/3GPP2 LCS and OMA SUPL (Secure
User Plane Location).
Best regards,
Victoria Gray on behalf of OMA.
_______________________________________________ New-work mailing list New-work at ietf.org https://www1.ietf.org/mailman/listinfo/new-work
_______________________________________________ Ecrit mailing list Ecrit at ietf.org https://www1.ietf.org/mailman/listinfo/ecrit